Improvement in preventing the freezing of waste-water pipes



I J'. s McM'uRTRlE. PREVENTING THEFREEZING OF WASTE WATER PIPES.

'N 186,85Z Patented Jan.30,1877.

NITED STATES JOHN S. MGMURTRIE, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN PREVENTING THE FREEZING 0F WASTE-WATER PIPES.

Specification forming part of Letters Patent No. 186,862, dated January30, 1877; application filed January 10, 1877.

To all whom it may concern:

Be it known that I, JOHN S. MOMURTRIE,

of Philadelphia, Pennsylvania, have invented an Improvement inPreventing the Freezing of Waste-Water Pipes, of which the following isa specification:

The object of my invention is to prevent the accumulation of ice in andthe bursting of wastewater pipes of dwellings and other buildings, bycausing heated air or the heated products of combustion, or both, topass through them, in the manner described hereafter.

Figures 1 and 2 of the accompanying drawing represent vertical sectionsof parts of a building, showing the application of my invention to thewaste-water pipes.

In both views, A represents the Wall of a building; B, the cellar; D,the floor above the latter, and G the usual pipe through which thewaste-water is carried 011' from the caves of the roof. communicate,through the usual trap, with a neighboring sewer, and in Fig. 2 the pipeterminates above ground, the water discharged from it passing into theusual gutter at the curb.

In the cellar of the buiiding, Fig. 1, is a heater, H, and between thehot-air pipe of this heater and the waste-water pipe G a communicationis made by a tube, M, so that a portion of the heated air shall passintoand u'pw'ard through the said waste-water pipe, which is thus maintainedat such a temperature that no snow or ice can accumulate in it.

When there is no heater in the cellar, as in Fig. 2, the tube M,connected with the waste- Water pipe, may terminate in a flaring mouth,a, immediately below which is a gas-jet, 10, so that the heated productsof combustion and air warmed by contact with the flame will en- In Fig.1 this pipe is supposed to ter the tube M, pass upward through the pipe,7 and maintain the same at the desired temperature.

A lamp may he used in place of the gasburner, or the products ofcombustion from a stove may be directed through the pipe G when the freeupward course of the heated.

air or heated products of combustion is desired, for which purpose Iprefer to furnish the lower end of the pipe with a self-closing valve,which will permit the water to escape without admitting any great amountof air. When the pipe Gr communicates with the sewer, however, throughthe usual trap, the latter will serve to close the pipe without the aidof a valve.

In some cases the pipe M may be carried up through the waste-water pipeto the top of the same, the valve in this case being also dispensedwith.

I claim as my invention The mode herein described of preventing theaccumulation of ice in the waste-Water pipes of dwellings and otherbuildings-that is to say, by directing heated air or the heated productsoi'combustion, or both, to and through the pipes, as herein set forth.

In testimony whereofI have signed my name to this specification in thepresence of two subscribing witnesses.

JOHN S. MoMUR/IJRIE.

Witnesses:

HERMANN MOESSNER, HARRY SMITH.

